To get an idea of exactly how small the worldâs smallest insect is, take out a ruler and look at those tiny lines that appear in between centimeters (make sure youâre not on the side that measures in inches). If in doubt, ask a grown-up to help you find the millimeters.
Diarrhea can also cause weight loss. Abdominal pain is another symptom of colon cancer that may prevent you from eating normally. If you have lost a significant amount of weight accompanied with these symptoms, you need to talk to your doctor immediately to determine the cause.
Gastroenteritis (stomach flu) is a viral condition that causes diarrhea and vomiting. Viral pharyngitis is a sore throat caused by a virus, and causes throat pain and cold-like symptoms. Tuberculosis usually infects the lungs, causing a bad cough with blood, chest pain, fever, chills, and fatigue. Iron poisoning causes abdominal pain, vomiting, diarrhea, lethargy, and dehydration.